Single-master AHB system: AHB-Lite

A simple single-master AHB system (AHB-Lite) is modified from the AHB system on ARM Logic Module as an example. The original tri-state bidirectional signals (SDATA, HDATA, HREADY) in Logic Module’s AHB system are modified into pairs of input and output signals. AHB-Lite does not support burst transfer because it was originally designed to use only ZBT(Zero Bus Turn-around) SRAM, therefore burst transfer is not necessary. Moreover, since there’s only one single master in AHB-Lite, therefore there is no arbiter module. Hence bus request and bus grant signal are also not necessary in single-master systems like AHB-Lite.